Arduino program to handle relays and control them using switches with support for double-click and long-press. Integration with home automation systems is possible through MySensors integration over ...

Digital pins of Arduino cannot supply the amount of current needed to turn on a normal 5v relay. Besides we are using 12v relay in this project. Vin pin of Arduino cannot easily supply this much ...

An Arduino shield for controlling four 12v relays. Contribute to njh/relay-driver-shield development by creating an account on GitHub.

In this quick Arduino tutorial I will explain how you can control a relay using the Arduino Board, one 1K and one 10K resistors, 1 BC547 transistor, one 6V or 12V relay, one 1N4007 diode and a 12V fan ...

Here, we are using a 4 relay module because we will only control four appliances. If you want to automate a different number of appliances, you can use a different relay module. There are many relay ...

Fig. 1: Block diagram of Arduino based liquid vending machine Circuit and working The circuit diagram of Arduino based liquid vending machine is shown in Fig. 2. This project consists of analogue flow ...

Arduino Uno is powered with a 12V DC adaptor/power source. The relay module and Bluetooth module can be, in turn, powered using a board power supply of Arduino Uno.

Or just use a MOSFET if the relay isn't very fussy. Or, use a combination of the Arduino driving something like the above timer relay, which itself will pull the 12V relay high if that's all it needs.

Learn how to build an RFID door lock system using Arduino for secure and smart access control. This step-by-step guide covers circuit connections, coding, and hardware setup to create an automated ...